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Triskaidecagon

From Biocrawler, the free encyclopedia.

A triskaidecagon is a polygon with 13 sides and angles. The measure of each internal angle of a regular triskaidecagon is approximately 152.308 degrees, and the area with side length a is given by

A = \frac{13}{4}a^2 \cot \frac{\pi}{13} \simeq 13.1858 a^2.

A regular triskaidecagon is not constructible with straightedge and compass.

The current flag of the country Bahrain has a red field that is a triskaidecagon.

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See also


Polygons
Triangle | Quadrilateral | Pentagon | Hexagon | Heptagon (Septagon) | Octagon | Enneagon | Decagon | Hendecagon | Dodecagon | Triskaidecagon | heptadecagon | enneadecagon | icosagon | 30-gon | 50-gon | hectagon | chiliagon | myriagon
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